citations:
USMilitary 59 M Tons 2017: https://www.forbes.com/sites/niallmccarthy/2019/06/13/report...
BTC: 37M M tons - https://www.cnbc.com/2021/02/05/bitcoin-btc-surge-renews-wor...
BTC: 130 M tons China - https://cacm.acm.org/news/251829-bitcoin-mining-emissions-in....
Banks: 1040 M tons - https://www.bloomberg.com/news/articles/2021-04-27/banks-pro...